Cisco XR 12000 Series - Manual (Page 45)

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Cisco XR 12000 Series Router SIP and SPA Hardware Installation Guide
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Chapter 2 Overview: Cisco XR 12000 Series Router Shared Port Adapters
1 Port 10-Gigabit Ethernet SPA Overview
Figure 2-10 LC-Type Cable for the XFP Optical Transceiver Modules
Note The 40-pin connector on the 1-Port 10-Gigabit Ethernet SPA is used for resilient packet ring (RPR)
connections. This feature is not supported in Cisco IOS XR Release 4.3.0.
XFP Connections
The 10GLR, 10GER, and 10GZR XFP modules include an optical transmitter and receiver pair
integrated with Clock and Data Recovery (CDR) integrated circuits. The XFP modules provide
high-speed serial links at the rate of 10.3125 Gbps (10 Gigabit Ethernet) on single-mode fiber (SMF).
The transmit side recovers and retimes the 10-Gbps serial data and passes it to a laser driver. The laser
driver biases and modulates a 1310-nm, 850 nm or 155-nm laser, enabling data transmission over SMF
through an LC connector. The receive side recovers and retimes the 10-Gbps optical data stream from a
photo detector transimpedance amplifier and passes it to an output driver.
See the label on the XFP module for technology type and model. Figure 2-11 shows an XFP module and
Table 2-12 shows the XFP module specifications.
Figure 2-11 XFP Module
XFP module dimensions are:
• Height: 12.5 mm
• Width: 18.35 mm
• Length: 71.1mm
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